01 -
Season steak tips with Cajun seasoning. Heat olive oil and 1 tbsp butter in a skillet over medium-high heat. Sear steak until browned on all sides. Remove and set aside.
02 -
In a large pot, boil salted water and cook rigatoni until al dente. Drain and reserve 1/2 cup pasta water.
03 -
In the same skillet, add remaining butter. Sauté minced garlic until fragrant. Pour in heavy cream and bring to a gentle simmer.
04 -
Stir in Parmesan until melted. If using, add mozzarella or Fontina. Season with salt, pepper, and more Cajun seasoning if desired.
05 -
Toss cooked rigatoni into the sauce, adding reserved pasta water as needed to thin. Fold in steak tips gently.
06 -
Plate immediately, garnished with extra Parmesan and cracked black pepper.